Valve



l Jan. 10,1928.

1,656,132 c. c. ARRASMITH ET AL VALVE Filed Feb. 3. 1926 l atented Jan 10, 1928.

UNITED STATES 1 ,656,132 PATENT OFFICE.

ULAUIDE U. ARBASMITE AND HARRY ID. MAIRKWELL, OF EDMONDS, WASHINGTON.

VALVE.

Application filed February 3, 1926. $cria1 No. 85,7741.

'llhe object of this invention is to place pressure on the fluid in a tank,- pipe, or other receptacle or duct, and especially to place pressure on the tank ot a sewage ll system aboard ship, for the purpose of disposing of waste water, below the load line oil the vessel,

A further object is to provide a valve adapted tor use in connection with gear 1h shitting mechanism, hydraulic rated, and other devices employing liquid, gas, or other fluid pressure,

ith the foregoing and other objects in view, the invention consists in the novel construction and arrangement of elements described, illustrated and claimed, it being dcrstood that modifications may be made within the scopeot the claims, without departing trom the spirit oi. the invention in the drawings forming part oi this application,

Figure 1 shows the construction in vertical section. v

Figure 2 is a transverse section on the line 2-2 of Figure 1.,

Figure, 3 is a transverse section on the line 3-3 oil Figure 1,

Figure at shows a detachable valve seat,

in vertical section,

Hil

cap 11 having threaded connection at 12 with the inner portion of the upper end of the casing, a flange 12 being provided at the point indicated, so that an efllective joint is produced @n the under side of the cap plate 11 is a boss 13 accommodating the upper end oil a coiled spring 14-, the latter cooperating with an element 15 carried by the upper portion oil a piston 16, The piston flts within the casing 10, and is resiliently held with reference to movement in one direction, by spring 141.

11 is provided with a bore 18 receivpipe connection 19 communicating the housing 20 oil a plug cool: 21, the heing'controlled by a handle 22, and erated manually, or otherwise, according in circumstances enisting in a particular 1Q includes a lower eatension havhug enlargement 26 provided with an annular channel 2?, and extension '25 'ilurther includes flange 2% provided with apertures 29, permitting the valve to be mounted in any suitable manner The extension 25 is also provided with an The valve casing 10 is provided with a outlet member 30 communicating with the annular channel 27, for the purpose indicated below. v

Within the extension 25, we mount a tubular element 33, having ports 3d therein, adapted to communicate with annular chan nel 27, in one position oil element 32, and said element 32 is also provided with a series or upper ports 35.

Piston 16 carries a stem 37 having threaded connection with tubular element 32, and a separate valve element 38 has threaded connection with the upper end of element 32, and includes an external flange cooper-at ing with the flange 39 on element 37.

"lit

The movableelements of the valve as a whole, are therefore practically termed in valve may be replaced whenever required, A detachable valve seat is designated 410 and includes an upper flange and a reduced "one piece, and the working lace 38 ot the threaded portion ll cooperating with athreaded portion in the upper part oi eaten sion 25, this valve seat also being renewable, when occasion requires,

Fluid enters casing 10 through connection 4124:, and assuming that piston 16 is down and valve '38 is seated at 10, fluid will pass through port 16 oil piston 16, irom chamber 4:5 to chamber 46, and'upon opening cool: 21, manually or otherwise, pressure will escape at this point, and because of the rela tively small cross section oiE port 16 in the piston, pressure will be reduced in upper chamber to, so that the pressure in chamber will raise piston 16 and will raise valve 32%, together with tubular valve member 32..

This operation opens upper ports and closes lower ports 3 1, and fluid passes down wardly' through tubular valve 82, and is discharged at 1-? /l hen cook 21 is closed, spring 1 lseats valve 33, and pressure is equalised above and below piston 16, llpper ports tlti are now closed and lower ports 34; are incom munication with annular channel 2i", and pressure is exhausted through or connection 30 in order to relieve any pressure which may exist in a pipe line or the lihe, with which the discharge portion have connection.

What is claimed. is:

1, ln a device oi? the class described, casing, a piston therein, the-piston having a port, an inlet connection :lor the casing, below the piston, valved outlet connection lid all may for the casing above the piston, a tubular valve connected with the piston, the casing including a reduced extension providing a shoulder, a valve member carried by the upper portion of the tubular element, and

3 adapted to seat at the shouldered portion of the casing, the tubular valve having upper- 7 below said shoulder and seat.

2. "In a device of the class described, a

casing, a ported piston therein, an inlet con-- nection for the casing, below the piston, valved outlet connection for the casino; above the piston, a spring interposed between the piston and the upper portion of the casing, a tubular valve connected with the piston, said casing including a reduced extension providing a shoulder, the tubular element projecting into said extension, a detachable valve member carried by the upper portion of the tubular element'and adapted to seat at the shouldered portion of the casing, a detachable seat connected with the shouldered portion of the casing, the detachable elements cooperating, said tubular valve element having upper and lower series of ports, and an outlet connection for the casing, below the shouldered portion and adapted to register with the lower series of ports when the upper series ofports is below said shoulder and seat, said upper ports of the tubular member being open when the piston rises and when pressure is relieved above the piston, permitting fluid to pass from the caslng through the tubular valve member for discharge through the lower end of the extension of'said casing.

In testimony whereof we afiix our signatures.

CLAUDE G. ABRASMITH. HARRY D. MARKWELL. 

